You must register your organisation for GST if it is a non-profit organisation and it has a GST turnover of $150,000 or more.
You may register voluntarily for GST if the turnover is less than $150,000.
In some circumstances you must register for GST even if your turnover is less than $150,000. For example, if your non-profit organisation has non-profit sub-entities.
For more information about registering your non-profit organisation for GST refer to: